I have a used kenmore coldspot elite model 106.72206201. Freezer is on top, it is NOT a sidebyside. Water is dripping onto the first fridge shelf and some is freezing and some is leaking to the bottom below the crisper drawers. Is there a manual with troubleshooting section to figure this out or do I need to call a Sears repair person and if so is it a big job? THANKYOU